feat: add mutation testing element transformation

[rjaegers]

🚀 Hey, I have created a Pull Request

Description of changes

✔️ Checklist

• I have followed the contribution guidelines for this repository
• I have added tests for new behavior, and have not broken any existing tests
• I have added or updated relevant documentation

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	8		0	0.01s
✅ JSON	prettier	3	3	0	0.43s
✅ JSON	v8r	3		0	2.61s
✅ MARKDOWN	markdownlint	5	0	0	0.71s
✅ MARKDOWN	markdown-table-formatter	5	0	0	0.21s
✅ REPOSITORY	checkov	yes		no	12.48s
✅ REPOSITORY	gitleaks	yes		no	0.71s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	grype	yes		no	9.94s
✅ REPOSITORY	secretlint	yes		no	0.87s
✅ REPOSITORY	trivy	yes		no	4.73s
✅ REPOSITORY	trivy-sbom	yes		no	0.06s
✅ REPOSITORY	trufflehog	yes		no	2.91s
✅ SPELL	lychee	20		0	0.89s
✅ YAML	prettier	11	11	0	0.52s
✅ YAML	v8r	11		0	4.92s
✅ YAML	yamllint	11		0	0.39s

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[github-actions]

[MegaLinter] _{reported by reviewdog 🐶}

sonarqube-issue-conversion/action.yml

Lines 1 to 44 in 33eab90

	name: SonarQube Issue Conversion
	description: Transform tool output into generic SonarQube format(s)
	inputs:
	input:
	description: Single or multiple tool output files to convert
	required: true
	output:
	description: Output file for converted issues
	required: true
	transformation:
	description: Type of transformation to apply (one of gtest-to-generic-execution, mutation-test-to-generic-issue)
	required: true
	runs:
	using: composite
	steps:
	- uses: dcarbone/install-jq-action@e397bd87438d72198f81efd21f876461183d383a # v3.0.1
	- uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
	with:
	python-version: '3.12'
	- shell: bash
	run: |
	python -m pip install --upgrade pip==24.3.1
	pip install lxml
	- shell: bash
	run: |
	echo 'Using transformation: ${{ inputs.transformation }} to convert ${{ inputs.input }} to ${{ inputs.output }}'
	case ${{ inputs.transformation }} in
	'gtest-to-generic-execution')
	{ echo '<testExecutions version="1">'; xsltproc ${GITHUB_ACTION_PATH}/converters/gtest-to-generic-execution.xslt ${{ inputs.input }}; echo '</testExecutions>'; } | tee ${{ inputs.output }} > /dev/null
	;;
	'mutation-test-to-generic-issue')
	MERGED_MUTATION_FILE=$(mktemp)
	jq -s 'reduce .[] as $item ({}; . * $item)' ${{ inputs.input }} > ${MERGED_MUTATION_FILE}
	jq --arg workspace "${GITHUB_WORKSPACE}" -f ${GITHUB_ACTION_PATH}/converters/mutation-elements-to-generic-issue.jq ${MERGED_MUTATION_FILE} > ${{ inputs.output }}
	;;
	*)
	echo 'Unknown transformation type: ${{ inputs.transformation }}'
	exit 1
	;;
	esac